The map above shows New Jersey and New South Wales side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
New Jersey vs New South Wales Geography
Land area: New Jersey has a land area of 7,355 square miles (19,049 km²), while New South Wales has 309,130 square miles (800,642 km²). New South Wales' land area is 42.0 times larger than New Jersey's.
Total area: New Jersey: 8,719 square miles (22,583 km²) vs New South Wales: 309,130 square miles (800,642 km²), including inland and coastal water. New South Wales' total area is 35.5 times larger than New Jersey's.
Length: New Jersey is 169 miles (271 km) long from north to south; New South Wales is 678 miles (1,092 km). New South Wales' north-south length is 4.0 times (301%) longer than New Jersey's.
Width: New Jersey spans 129 miles (207 km) east to west; New South Wales spans 831 miles (1,338 km). New South Wales' east-west width is 6.4 times (544%) wider than New Jersey's.
Highest point: New Jersey's highest point is High Point at 1,798 feet (548 m); New South Wales's is Mount Kosciuszko at 7,310 feet (2,228 m). Mount Kosciuszko is 5,512 feet higher than High Point.
Lowest point: New Jersey's lowest point is Atlantic Ocean at 0 feet; New South Wales's is Pacific Ocean at 0 feet. Both lowest points are at or near sea level.
New Jersey vs New South Wales Population and History
Population: New Jersey has a population of 9,500,851 (2024), while New South Wales has 8,624,534 (2025). New Jersey's population is 1.1 times (10%) larger than New South Wales'.
Population density: New Jersey: 1,291.8 people per square mile vs New South Wales: 27.9. New Jersey's population density is 46.3 times higher than New South Wales'.
Largest metro area: New Jersey's largest metropolitan area is New York-Newark-Jersey City, NY-NJ metro area (19,940,274 people) vs New South Wales's Greater Sydney (5,638,830). New York-Newark-Jersey City, NY-NJ metro area's population is 3.5 times (254%) larger than Greater Sydney's.
History: New Jersey: Admitted to the Union on December 18, 1787, as the 3rd state. New South Wales: Became an Australian state at Federation on January 1, 1901; founded as a colony in 1788. In its current form, New Jersey is the older of the two by 114 years.
New Jersey vs New South Wales Economy
GDP: New Jersey's GDP is $846.0 billion (2024) vs New South Wales's $547.1 billion. New Jersey's economic output is 1.5 times (55%) larger than New South Wales'.
GDP per capita: New Jersey: $89,045 per person vs New South Wales: $63,435. New Jersey's GDP per capita is 1.4 times (40%) higher than New South Wales'.
Official Websites
New Jersey official website · New South Wales official website
More Size Comparisons
All New Jersey size comparisons · All New South Wales size comparisons
Area, elevation and boundary figures come from official national statistics and US Census Bureau and Natural Earth boundary data; US state population, economic, county and tax figures come from the US Census Bureau, the Bureau of Economic Analysis and the Tax Foundation. Figures are rounded and for general reference.